Deep Face 2 Flashcards
What are the muscles of mastication?
Masseter, temporalis, lateral and medial pterygoid
Temporalis muscle: What is the action of Anterior and medial fascicles?
elevate jaw
Temporalis muscle: What is the action of posterior fascicles ?
retract jaw
What muscle is innervated by the Anterior and Posterior Deep Temporal Nerves, branches from Mandibular Div. of Trigeminal, V3
Temporalis
_____ separates masseter from buccinator.
Buccal fat pad
Strong elevator of the jaw, mighty _____
masseter
Masseter: Innervated by the Masseter branch from the stem of the _____ Division of Trigeminal Nerve
Mandibular
Superior head of the Lateral Pterygoid Muscle arises from _____ of sphenoid bone
and inserts mainly into articular capsule and disc of TMJ
infratemporal crest
Inferior head of the Medial Pterygoid Muscle arises from lateral surface of _____
and inserts into condylar process of mandible, pterygoid fovea
lateral pterygoid plate
Action of lateral pterygoid muscle?
Open the jaw by pulling condyle and articular disc forward
Medial Pterygoid Muscle is Deep to Lat. Pterygoid; runs parallel to _____
Masseter
Deep head of Medial Pterygoid Muscle ORIGINATES deep from the medial surface of the _____ plate.
lateral pterygoid
Superficial head of Medial Pterygoid Muscle ORIGINATES Superficial from the tuberosity of the _____
maxilla
Medial Pterygoid Muscle Inserts onto the mandible near the _____, interior side
angle
Medial Pterygoid Muscle:
• Functions to elevate and _____ the mandible
• Works also to _____ food
protrude; “grind”
Both _____ and _____attach to angle of the
mandible, forming masseteric (mandibular) sling, or “hammock”
masseter; medial pterygoid
Articular tubercle of the temporal bone: _____ limit of the TMJ.
anterior
Mandibular Fossa of the temporal bone: receives _____ of the mandible to create the TMJ.
head
Postglenoid tubercle of the temporal bone: _____ limit of the TMJ.
posterior
_____ process of the mandible: with its neck and head.
Condyloid
TMJ Articular Disc is Biconcave, made of
_____.
fibrocartilage
TMJ is Associated with _____ and _____ of mouth
Elevation/depression
opening and closing
Condyles of mandible rotates on articular disc about _____ axes through mandibular condyles
transverse
TMJ Articular disc glides anteriorly and posteriorly along temporal bone between mandibular fossa and _____ tubercle
articular
Movements at the TMJ: Elevation/depression is in _____ compartment
inframeniscal
Movements at the TMJ: Protrusion/retraction is in _____ compartment
suprameniscal
The _____ membrane of the TMJ joint capsule encloses the temporomandibular joint complex, and is attached to the articular disc
fibrous
The Ligaments of the TMJ function to help _____ the movement of the joint, but they DO NOT _____ it or prevent excessive movement due to force
limit; stabilize
Temporomandibular ligament (lateral ligament) of TMJ:
• _____ part of the joint capsule
• Runs from lateral _____ process, anterior to articular capsule,
to mandibular neck
• Strengthens the TMJ _____
• Together with _____ tubercle, prevents posterior dislocation of the joint
- Thick
- zygomatic
- laterally
- postglenoid
Stylomandibular ligament of TMJ:
• Thickening of the _____ membrane of the parotid gland
• Posterior to joint; from tip of _____ process to angle of mandible
fibrous; styloid
Sphenomandibular ligament of TMJ:
• Medial to joint; from spine of sphenoid bone to _____ of mandible
• Passive support of the mandible
-lingula
-bruxism (grinding of teeth)
-holding tension in face and jaw
-tooth loss
-trigger points in muscles of mastication
-whiplash
-systemic disease
-neck dysfunction
-neck muscle trigger points
(THESE ARE CAUSES OF WHAT?)
TMJ
-headache
-face pain, scalp pain
-ear pain
-vertigo, ringing in ears, itchy ears
-jaw pain
-clicking, popping, locking of jaw
-teeth pain
-sinus pain
(THESE ARE SYMPTOMS OF WHAT?)
TMJ
